Chemistry 1 final study guide

150 degree Celsius

432 K equals

Physical

A ___ change involves a change in one or more physical properties , but no change in the fundamental components that make up substance.

mass

A sample of a gas has a definite

atom

A sample of an element contains only one kind of

a strong electrolyte

A substance that, when dissolved in water, produces a solution that electric current very efficiently is called

HBr, bromic acid

All of the following are aqueous solution. Which is incorrectly named

ionic compound

Ammonium fluoride is considered which of the following

ionic compound

Ammonium fluoride is considered which of the following?

BaCO3

An aqueous solution of ammonium carbonate is allowed to react with an aqueous solution of barium chloride. Identify the solid formed in the reaction. 1 (NH4)2CO3(aq)+1BaCl2(aq)--->2NH4Cl(aq)+1BaCO3(s)

CO3 charge -2 (aq)

An aqueous solution of ammonium carbonate is allowed to react with an aqueous solution of magnesium chloride. Which of the following species does the complete ionic equation contain: L(NH4)2Co3 + 1 MgCl2 ---> 2 NH4Cl + 1 MgCO3 (s) 2NH4+(aq) + CO3-2 (aq) + Mg+2(aq)+2Cl-(aq)---> 2NH4+(aq) + MgCO3(s) CO3]+2 (aq)+ Mg+2(aq)---> MgCO3 (s)

2NH4+ (aq)

An aqueous solution of ammonium sulfate is allowed to react with an aqueous solution of lead (II) nitrate. The complete ionic equation contains which of the following species (when balanced in standard form)? 1(NH4)2SO4(aq)+1Pb(NO3)2(aq)--> 2NH4NO3(aq)+1PbSO4(s) 2NH4+(aq)+SO42-(aq)+Pb2+2NO3-(aq)-->2NH4+(aq)+2NO3-(aq)+PbSO4(s)

Pb2+(aq)

An aqueous solution of ammonium sulfate is allowed to react with an aqueous solution of lead (II) nitrate. The net ionic equation contains which of the following species (when balanced in standard form)?

1

An aqueous solution of sodium carbonate is allowed to react with an aqueous solution of magnesium chloride. What will be the coefficient of the solid formed in the balanced equation 1Na2CO3(aq)+1MgCl2(aq)-->2NaCl(aq)+1MgCO3(s)

132,54 Xe

An atom that has 54 protons, 54 electrons 54, and 78 neutrons is ___.

5.58 g/ml

An object has a mass of 40.l g and occupies a volume of 7.19 ml. The density of this object is

acid base

Classify the following reaction HNO3(aq)+KOH(aq)--->KNO3(aq)+H2O(L)

two of the above ; oxidation, reduction + synthesis

Classify the following reaction: 2Mg(s)+O2(g)-->2MgO(s)

3.007 x 10^-5

Express 0.00003007 in exponential notation

1.78493 x 10^5

Express the number 178493 in scientific notation

4

For the measurement ).3284g , which digit is estimated

2

How many electrons are transferred in the following oxidation-reduction reaction? Zn(s)+2AgNO3(aq) ---> Zn(NO3)2(aq)+2Ag(aq)

20 ml

How many militers are in 0.020 L.

7.0 x 10^1 ml

How many milliliters are in 0.070?

5

How many of the following are compound? H20, N2O4, NaOH, MnO2 , HF

1

How many of the following are pure compounds. sodium,sugar,oxygen,air,iron

1

How many of the following are pure compounds? sodium, sugar, oxygen, air, iron

4

How many of the following are true regarding 133(st) I.The number of neutrons is 78 II.The ion contains more protons than electrons III.The mass number is 133. IV. The ion is a alkali metal.

35,35,46

How many protons, electrons, and neutrons, respectively 81Br have? look at the table on the periodic table

5

How many sigfigs are in the number 0.0040090

3

How many significant figures are in the number 1.89 x 10^3?

7

How many significant figures are in the number 34.00500?

4

How many significant figures are in the number 6.022x10^32

Physical, physical, chemical

In a laboratory experiment a core of iron is cut and the iron fillings are collected. The fillings are placed with powdered sulfur in a beaker. The beaker is then heated strongly and the iron reacts with the sulfur to produce the solid iron oxide. In correct sequence, the following separate changes have occurred.

a compound

In chemistry,a formula is used to represent

solid

In which phase of water are the molecules close together and in relatively rigid experiments?

10 -3 seconds

One millisecond is equal to how many seconds

23,460

Round 23,456 to 4 significant figures

NaClO2

Sodium chlorite has the formula

phosphorus trichloride

The binary compound PCl3 is called

2+

The charge on a barium ion in its ionic compound is

(NH4)2SO4

The correct formula for ammonium sulfate is

Sodium oxide

The correct name for Na2O is

oxidation-reduction and synthesis

The equation 2Al(s)+2Br2(l)-->2AlBr(s) is a ___ reaction

(NH4)3PO4

The formula for the compound formed from the polyatomic ions NH4+ and PO43- is

0.302 L

The measurement that has been expressed to 3 significant figures is

0.022 mg

The measurement that only has zeros that are not significant is

mercury (II) ion

The name for Hg2+ is

ammonium perchlorate

The name for the compounf NH4ClO4 is __.

2.002

The number 2.00152 rounded to 4 significant figures is

7.004

The number 7.00439 rounded to 4 significant figures is

acid-base

The reaction HNO3(aq)+KOH(aq)--->H2O(l)+KNO3(aq) is a _____ a reaction

gaseous

The state of matter for an object that has both definite wolume and definite shape is __.

9

The total number of oxygen atoms indicated by the formula Fe2(CO3)3 is

95

Using the rules of significant figures calculate the following 90+5.129

80

Using the rules of the significant figures,calculate the following 6.16>+10

CoCl2

What is the formula for Cobalt (II) chloride

Ag2O

What is the formula for Gold (I) oxide

acid-base

What type of reaction produces water and a salt ?

3H2S

When the equation Cr2S3+6HCl -->2CrCl3+3H2S is balanced in standard form, one of the terms in the balanced equation is

4

When the equation Si(s)=HF(aq)-->SiF4(g)+H2(g) is balanced , what is the coefficient for HF? Si(s)+4(HF(aq)-->SiF4(g)+2H2(g)

4

When the following equation is balanced using the smallest possible integers, what is the number in front of the substance in bold type? SiCl4+2H2O---> SiO2 + 4HCl

1

When the following equation is balanced using the smallest possible integers, what is the number in front of the substance in the bold type? P4O10+3H(O4)-->H3PO4

2

When the following equation is balanced using the smallest possible integers, what will be the coefficient for the substance that has been emboldened? 2 NBr3 + 6 NaOH ---> N2 + 6NaBr + 6 HOBr

1

When the following equation is balanced what is the number in front of the substance in bold type? Sn+2NaOH-->Na2SnO2+H2

2

When the following equations are balanced using the smallest possible integers, what is the number in front of the underlined substance in each case? Pb(s)+2AgNO3(aq)--->Pb(NO3)2(aq)+2Ag(s)

4

When the following equations are balanced using the smallest possible integers, what is the number in the front of the underlined substance in each case? CH3OH+O2--> CO2+H2O (Not Balanced)

6

When the following equations are balanced using the smallest possible integers, what will be the coefficient for the underlined substance in each case? 6Sr(s)+P4(s)---> 2Sr3P2(s)

1

When the following equations are balanced using the smallest possible integers, what will be the coefficient for the underlined substances in each case? S(s)+O2 ---> SO2 (g)

TiO2 , titanium (II) oxide

Which of the following compounds is named incorrectly

NH3(aq)

Which of the following compounds is not named as an acid

Gold is an inert nonreactive metal

Which of the following describes a chemical property of gold?

Na

Which of the following elements is an alkali metal?

CsCl2

Which of the following formulas is incorrect

cooking an egg

Which of the following involves a chemical change?

(NH4)2S

Which of the following ionic compounds is soluble in water?

Na2CO3

Which of the following ionic compounds is soluble in water?

The outside temperature is 25C

Which of the following is NOT an exact number, therefore should be used when determining the number significant figures to which to round to a calculation?

germanium

Which of the following is a metalloid

Carbon

Which of the following is a nonmetal

Fe(OH)2 ; iron (III) hydroxide

Which of the following is named incorrectly? What should its name be?

Nickel (II) peroxide , Ni2O

Which of the following is not the correct chemical formula for the compound named?

Sugar dissolves in coffee

Which of the following is only a physical change

P2Cl7

Which of the following is the correct formula for diphosphorus heptachloride?

Na2SO3

Which of the following is the correct formula for sodium sulfite

An ion that is present in solution but does not participate directly in the chemical reaction

Which of the following most accurately describes a spectator ion?

K+ and NO2 -

Which of the following spectator ions in the reaction in aqueous solution of barium nitrate and potassium phosphate? ____Ba(NO3)2 (aq)+ ____K3PO4(aq)--->___Ba3(PO4)2 (s) + ___KNO3(aq)

When two nonmetals react, the compound formed is ionic

Which of the following statements is not true?

P

an atom with 15 protons and 16 neutrons is an atom of

All of the above

an example of a pure substance a.elements b.carbon dioxide c.compound d.pure water e.all the above

no solid form

identify the solid product that forms when the following aqueous solutions are mixed: KNO3 (aq) + BaCl2 (aq) -> KCl (aq) + Ba(No3)2 (aq)